Protective inner shell for a helmet



FIG. 1 is a perspective view of a protective inner shell for a helmet design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof, the left side elevational view of which is a mirror image; and,

FIG. 5 is a top plan view thereof.

In the drawings, the broken lines represent the portions of the protective inner shell for a helmet, which form no part of the claim. 

CLAIM The ornamental design for a protective inner shell for a helmet, as shown and described. 